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A new double-barreled irrigation/aspiration (I/A) cannula is presented. It is a modification of the Simcoe I/A cannula and has proven useful for cortical cleanup in the superior capsular fornix.
In this study personal observations during parachute jumping under various visual conditions are recorded. Jumps were executed with reduced visual acuity, monocular vision, and hemianopic defects of the visual fields. The conclusions regarding admission to parachute jumping drawn from the author's personal observations are discussed.